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National Repository of Grey Literature 3 records found  Search took 0.01 seconds. 
The effect of fertilizer application system CULTAN on content of sterols in aboveground maize biomass
 Pavlík, Milan ; Pavlíková, D. ; Balík, J. ; Najmanová, J.
The results of free β-sitosterol analyses showed its increasing concentration after injected UAN application in contrast to ammonium nitrate (AN) treatments. The concentrations of free β-sitosterol in plants growing on urea ammonium nitrate solution (UAN) treatments were increased more than 100% during 13 days after fertilizer application. Our results confirmed that sterol interconversions are controlled by environmental conditions and they are involved in the regulation of membrane properties in response to changing growth conditions.
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The effect of fertilization by nitrogen on leaves of free amino acids in plants
 Neuberg, M. ; Pavlík, Milan ; Balík, J. ; Kaliszová, R. ; Pavlíková, D.
The effect of different fertilization systems, especially CULTAN (Controlled Uptake Long Term Ammonium Nutrition), on levels of selected amino acids (alanine, glycine, serine, asparagine and glutamine) was investigated in this study. As modeling plant was used maize (Zea mays L.; hybrid Rivaldo) and levels of amino acid were measured by GC-MS. We found significant difference in the levels of certain amino acids. Concentration of alanine and glutamine was higher by treatment with urea ammonium nitrate solution (DAM 390) compared with individuals treated by ammonium nitrate.
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The phosphorus role in plants
 Pavlíková, D. ; Pavlík, Milan ; Balík, J.
Phosphorus play very important role in plant metabolism. It is active as energy transporter and important structural component. Phosphate is relatively unavailable to plant roots. Thus plants have evolved several strategies for obtaining P from the soil. They can modify root structure and function, excrete root exudates helping with solubilization of P compounds in root rhizosphere.
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